One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(4,6)(7,8,11,9)(10,12,14,13)(15,16,18,20)(17,19,21,22)(23,24,28,26)(25,30,27,29)(8,9)(12,13)(17,21)(19,22)(23,25,28,27)(24,29,26,30)(3,4,5,6)(7,9,11,8)(10,12,14,13)(15,17)(16,19)(18,21)(20,22)(23,26,28,24)(25,29,27,30)(7,10,11,14)(8,12,9,13)(15,16)(17,19)(18,20)(21,22)(23,27,28,25)(24,30,26,29)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.